A focal seizure refers to an abnormal electrical activity surge confined to a specific area of the brain. Fly-biting seizures are a type of focal seizure in which a dog snaps at the air like she is biting at invisible flies. Although the only way to definitively determine that fly-biting and other suspected focal seizures are caused by seizure activity is through an electroencephalogram (EEG), this test is often impractical due to the unpredictable nature of the seizures. The same anti-epileptic medications used for generalized seizures are typically used in managing focal seizures.